Project Overview The National Geodetic Survey (NGS), an office of NOAA’s National Ocean Service, manages a network of Continuously Operating Reference Stations (CORS) that provide Global Navigation Satellite System (GNSS) data in support of positioning, meteorology, space weather, and geophysical applications throughout the United States, its territories, and several foreign countries (ref: CORS website). In September, … Continued
Project Overview This project came about quickly after the 3 September 2016, Mw 5.8, Pawnee, Oklahoma, earthquake. It is collaboration between the University of Memphis, University of Oklahoma (OU), and Oklahoma Geological Survey (OGS). The project deployed eight GPS stations around the causative Sooner Lake fault, in order to measure the years-long relaxation of the … Continued
Project Overview As part of the ongoing COCONet installation phase, one continuously operating GPS site was installed on Redonda Island in the West Indies of the Caribbean ocean. The island belongs to the nation of Antigua but its nearest neighbor is Montserrat, located 12 miles due southeast. Redonda is an uninhabited volcanic remnant characterized by … Continued
Project Overview In 21 days, UNAVCO field engineer Mike Fend, Kendall Wnuk of Penn State University, and Allan Morales of INETER visited three active volcanoes and 25 GPS stations. This tally includes both COCONet stations and stations in local volcanic networks in Nicaragua. By air and ground, the team performed maintenance on 15 telemetered cGPS … Continued
Project Overview Determining how the Caribbean plate moves with respect to the neighboring North America and South America plates has been a major challenge. Geologic plate motion models using seafloor magnetic anomaly rates, transform fault azimuths, and slip vectors are challenging due to sparse data. The only rates come from the Cayman Spreading Center, and … Continued
Project Overview UNAVCO engineers in collaboration with the City of Sitka installed station AKSI in Sitka, Alaska, on the historical Sitka Post Office. The station is part of the National Geodetic Survey (NGS) CORS network that provides GNSS data in support of three-dimensional positioning, meteorology, space weather, and geophysical applications. Surveyors, GIS users, engineers, scientists, … Continued
Project Overview The 2015 season in Alaska was defined by resource sharing and cooperative work with a number of agencies. The largest collaborative effort was a week-long project based in Homer, Alaska with work on and around Augustine volcano. UNAVCO PBO field engineers worked with staff from the USGS Alaska Volcano Observatory (AVO) and IRIS, … Continued
Project Overview Geodetic measurements with GNSS are a prime example of an observational data set that becomes far more valuable when scientists can access data without regard to national boundaries. Many governmental and research organizations are increasingly setting up GNSS stations worldwide, and are often open to sharing these data but lack the resources or … Continued
Project Overview Just before noon local time on April 25, 2015 at 11:56 am, a moment magnitude (Mw) 7.8 earthquake struck central Nepal and was felt in the capital, Kathmandu. Please see the U.S. Geological Survey (USGS) summary and Nepal’s National Seismological Centre summary of the Gorkha earthquake for more information about the event and aftershocks. Hours after the … Continued
Project Overview Determining how the Caribbean plate moves with respect to the neighboring North America and South America plates has been a major challenge. Geologic plate motion models using seafloor magnetic anomaly rates, transform fault azimuths, and slip vectors are challenging due to sparse data. The only rates come from the Cayman Spreading Center, and … Continued